18 July 2021, Yemen, Sanaa: A Yemeni livestock merchant feeds his bulls, as Muslims prepare for the upcoming holiday of Eid al-Adha, or "Feast of Sacrifice," at an animal market. Eid al-Adha is the holiest feast in Islam, during which Muslims slaughter cattle and sheep to commemorate the willingness of the Prophet Ibrahim (Abraham) to sacrifice his son Ishmael. Photo: Hani Al-Ansi/dpa